/*!
 * inflection
 * Copyright(c) 2011 Ben Lin <ben@dreamerslab.com>
 * MIT Licensed
 *
 * @fileoverview
 * A port of inflection-js to node.js module.
 */

/**
 * @description This is a list of nouns that use the same form for both singular and plural.
 *              This list should remain entirely in lower case to correctly match Strings.
 */
const uncountableWords = [
  // 'access',
  'accommodation',
  'adulthood',
  'advertising',
  'advice',
  'aggression',
  'aid',
  'air',
  'aircraft',
  'alcohol',
  'anger',
  'applause',
  'arithmetic',
  // 'art',
  'assistance',
  'athletics',
  // 'attention',

  'bacon',
  'baggage',
  // 'ballet',
  // 'beauty',
  'beef',
  // 'beer',
  // 'behavior',
  'biology',
  // 'billiards',
  'blood',
  'botany',
  // 'bowels',
  'bread',
  // 'business',
  'butter',

  'carbon',
  'cardboard',
  'cash',
  'chalk',
  'chaos',
  'chess',
  'crossroads',
  'countryside',

  // 'damage',
  'dancing',
  // 'danger',
  'deer',
  // 'delight',
  // 'dessert',
  'dignity',
  'dirt',
  // 'distribution',
  'dust',

  'economics',
  'education',
  'electricity',
  // 'employment',
  // 'energy',
  'engineering',
  'enjoyment',
  // 'entertainment',
  'envy',
  'equipment',
  'ethics',
  'evidence',
  'evolution',

  // 'failure',
  // 'faith',
  'fame',
  'fiction',
  // 'fish',
  'flour',
  'flu',
  'food',
  // 'freedom',
  // 'fruit',
  'fuel',
  'fun',
  // 'funeral',
  'furniture',

  'gallows',
  'garbage',
  'garlic',
  // 'gas',
  'genetics',
  // 'glass',
  'gold',
  'golf',
  'gossip',
  // 'grass',
  'gratitude',
  'grief',
  // 'ground',
  'guilt',
  'gymnastics',

  // 'hair',
  'happiness',
  'hardware',
  'harm',
  'hate',
  'hatred',
  'health',
  'heat',
  // 'height',
  'help',
  'homework',
  'honesty',
  'honey',
  'hospitality',
  'housework',
  'humour',
  'hunger',
  'hydrogen',

  'ice',
  'importance',
  'inflation',
  'information',
  // 'injustice',
  'innocence',
  // 'intelligence',
  'iron',
  'irony',

  'jam',
  // 'jealousy',
  // 'jelly',
  'jewelry',
  // 'joy',
  'judo',
  // 'juice',
  // 'justice',

  'karate',
  // 'kindness',
  'knowledge',

  // 'labour',
  'lack',
  // 'land',
  'laughter',
  'lava',
  'leather',
  'leisure',
  'lightning',
  'linguine',
  'linguini',
  'linguistics',
  'literature',
  'litter',
  'livestock',
  'logic',
  'loneliness',
  // 'love',
  'luck',
  'luggage',

  'macaroni',
  'machinery',
  'magic',
  // 'mail',
  'management',
  'mankind',
  'marble',
  'mathematics',
  'mayonnaise',
  'measles',
  // 'meat',
  // 'metal',
  'methane',
  'milk',
  'minus',
  'money',
  // 'moose',
  'mud',
  'music',
  'mumps',

  'nature',
  'news',
  'nitrogen',
  'nonsense',
  'nurture',
  'nutrition',

  'obedience',
  'obesity',
  // 'oil',
  'oxygen',

  // 'paper',
  // 'passion',
  'pasta',
  'patience',
  // 'permission',
  'physics',
  'poetry',
  'pollution',
  'poverty',
  // 'power',
  'pride',
  // 'production',
  // 'progress',
  // 'pronunciation',
  'psychology',
  'publicity',
  'punctuation',

  // 'quality',
  // 'quantity',
  'quartz',

  'racism',
  // 'rain',
  // 'recreation',
  'relaxation',
  'reliability',
  'research',
  'respect',
  'revenge',
  'rice',
  'rubbish',
  'rum',

  'safety',
  // 'salad',
  // 'salt',
  // 'sand',
  // 'satire',
  'scenery',
  'seafood',
  'seaside',
  'series',
  'shame',
  'sheep',
  'shopping',
  // 'silence',
  'sleep',
  // 'slang'
  'smoke',
  'smoking',
  'snow',
  'soap',
  'software',
  'soil',
  // 'sorrow',
  // 'soup',
  'spaghetti',
  // 'speed',
  'species',
  // 'spelling',
  // 'sport',
  'steam',
  // 'strength',
  'stuff',
  'stupidity',
  // 'success',
  // 'sugar',
  'sunshine',
  'symmetry',

  // 'tea',
  'tennis',
  'thirst',
  'thunder',
  'timber',
  // 'time',
  // 'toast',
  // 'tolerance',
  // 'trade',
  'traffic',
  'transportation',
  // 'travel',
  'trust',

  // 'understanding',
  'underwear',
  'unemployment',
  'unity',
  // 'usage',

  'validity',
  'veal',
  'vegetation',
  'vegetarianism',
  'vengeance',
  'violence',
  // 'vision',
  'vitality',

  'warmth',
  // 'water',
  'wealth',
  'weather',
  // 'weight',
  'welfare',
  'wheat',
  // 'whiskey',
  // 'width',
  'wildlife',
  // 'wine',
  'wisdom',
  // 'wood',
  // 'wool',
  // 'work',

  // 'yeast',
  'yoga',

  'zinc',
  'zoology',
];

/**
 * @description These rules translate from the singular form of a noun to its plural form.
 */

const regex = {
  plural: {
    men: new RegExp('^(m|wom)en$', 'gi'),
    people: new RegExp('(pe)ople$', 'gi'),
    children: new RegExp('(child)ren$', 'gi'),
    tia: new RegExp('([ti])a$', 'gi'),
    analyses: new RegExp(
      '((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$',
      'gi'
    ),
    databases: new RegExp('(database)s$', 'gi'),
    drives: new RegExp('(drive)s$', 'gi'),
    hives: new RegExp('(hi|ti)ves$', 'gi'),
    curves: new RegExp('(curve)s$', 'gi'),
    lrves: new RegExp('([lr])ves$', 'gi'),
    aves: new RegExp('([a])ves$', 'gi'),
    foves: new RegExp('([^fo])ves$', 'gi'),
    movies: new RegExp('(m)ovies$', 'gi'),
    aeiouyies: new RegExp('([^aeiouy]|qu)ies$', 'gi'),
    series: new RegExp('(s)eries$', 'gi'),
    xes: new RegExp('(x|ch|ss|sh)es$', 'gi'),
    mice: new RegExp('([m|l])ice$', 'gi'),
    buses: new RegExp('(bus)es$', 'gi'),
    oes: new RegExp('(o)es$', 'gi'),
    shoes: new RegExp('(shoe)s$', 'gi'),
    crises: new RegExp('(cris|ax|test)es$', 'gi'),
    octopuses: new RegExp('(octop|vir)uses$', 'gi'),
    aliases: new RegExp('(alias|canvas|status|campus)es$', 'gi'),
    summonses: new RegExp('^(summons|bonus)es$', 'gi'),
    oxen: new RegExp('^(ox)en', 'gi'),
    matrices: new RegExp('(matr)ices$', 'gi'),
    vertices: new RegExp('(vert|ind)ices$', 'gi'),
    feet: new RegExp('^feet$', 'gi'),
    teeth: new RegExp('^teeth$', 'gi'),
    geese: new RegExp('^geese$', 'gi'),
    quizzes: new RegExp('(quiz)zes$', 'gi'),
    whereases: new RegExp('^(whereas)es$', 'gi'),
    criteria: new RegExp('^(criteri)a$', 'gi'),
    genera: new RegExp('^genera$', 'gi'),
    ss: new RegExp('ss$', 'gi'),
    s: new RegExp('s$', 'gi'),
  },

  singular: {
    man: new RegExp('^(m|wom)an$', 'gi'),
    person: new RegExp('(pe)rson$', 'gi'),
    child: new RegExp('(child)$', 'gi'),
    drive: new RegExp('(drive)$', 'gi'),
    ox: new RegExp('^(ox)$', 'gi'),
    axis: new RegExp('(ax|test)is$', 'gi'),
    octopus: new RegExp('(octop|vir)us$', 'gi'),
    alias: new RegExp('(alias|status|canvas|campus)$', 'gi'),
    summons: new RegExp('^(summons|bonus)$', 'gi'),
    bus: new RegExp('(bu)s$', 'gi'),
    buffalo: new RegExp('(buffal|tomat|potat)o$', 'gi'),
    tium: new RegExp('([ti])um$', 'gi'),
    sis: new RegExp('sis$', 'gi'),
    ffe: new RegExp('(?:([^f])fe|([lr])f)$', 'gi'),
    hive: new RegExp('(hi|ti)ve$', 'gi'),
    aeiouyy: new RegExp('([^aeiouy]|qu)y$', 'gi'),
    x: new RegExp('(x|ch|ss|sh)$', 'gi'),
    matrix: new RegExp('(matr)ix$', 'gi'),
    vertex: new RegExp('(vert|ind)ex$', 'gi'),
    mouse: new RegExp('([m|l])ouse$', 'gi'),
    foot: new RegExp('^foot$', 'gi'),
    tooth: new RegExp('^tooth$', 'gi'),
    goose: new RegExp('^goose$', 'gi'),
    quiz: new RegExp('(quiz)$', 'gi'),
    whereas: new RegExp('^(whereas)$', 'gi'),
    criterion: new RegExp('^(criteri)on$', 'gi'),
    genus: new RegExp('^genus$', 'gi'),
    s: new RegExp('s$', 'gi'),
    common: new RegExp('$', 'gi'),
  },
};

const pluralRules: [RegExp, string?][] = [
  // do not replace if its already a plural word
  [regex.plural.men],
  [regex.plural.people],
  [regex.plural.children],
  [regex.plural.tia],
  [regex.plural.analyses],
  [regex.plural.databases],
  [regex.plural.drives],
  [regex.plural.hives],
  [regex.plural.curves],
  [regex.plural.lrves],
  [regex.plural.foves],
  [regex.plural.aeiouyies],
  [regex.plural.series],
  [regex.plural.movies],
  [regex.plural.xes],
  [regex.plural.mice],
  [regex.plural.buses],
  [regex.plural.oes],
  [regex.plural.shoes],
  [regex.plural.crises],
  [regex.plural.octopuses],
  [regex.plural.aliases],
  [regex.plural.summonses],
  [regex.plural.oxen],
  [regex.plural.matrices],
  [regex.plural.feet],
  [regex.plural.teeth],
  [regex.plural.geese],
  [regex.plural.quizzes],
  [regex.plural.whereases],
  [regex.plural.criteria],
  [regex.plural.genera],

  // original rule
  [regex.singular.man, '$1en'],
  [regex.singular.person, '$1ople'],
  [regex.singular.child, '$1ren'],
  [regex.singular.drive, '$1s'],
  [regex.singular.ox, '$1en'],
  [regex.singular.axis, '$1es'],
  [regex.singular.octopus, '$1uses'],
  [regex.singular.alias, '$1es'],
  [regex.singular.summons, '$1es'],
  [regex.singular.bus, '$1ses'],
  [regex.singular.buffalo, '$1oes'],
  [regex.singular.tium, '$1a'],
  [regex.singular.sis, 'ses'],
  [regex.singular.ffe, '$1$2ves'],
  [regex.singular.hive, '$1ves'],
  [regex.singular.aeiouyy, '$1ies'],
  [regex.singular.matrix, '$1ices'],
  [regex.singular.vertex, '$1ices'],
  [regex.singular.x, '$1es'],
  [regex.singular.mouse, '$1ice'],
  [regex.singular.foot, 'feet'],
  [regex.singular.tooth, 'teeth'],
  [regex.singular.goose, 'geese'],
  [regex.singular.quiz, '$1zes'],
  [regex.singular.whereas, '$1es'],
  [regex.singular.criterion, '$1a'],
  [regex.singular.genus, 'genera'],

  [regex.singular.s, 's'],
  [regex.singular.common, 's'],
];

/**
 * @description These rules translate from the plural form of a noun to its singular form.
 */
const singularRules: [RegExp, string?][] = [
  // do not replace if its already a singular word
  [regex.singular.man],
  [regex.singular.person],
  [regex.singular.child],
  [regex.singular.drive],
  [regex.singular.ox],
  [regex.singular.axis],
  [regex.singular.octopus],
  [regex.singular.alias],
  [regex.singular.summons],
  [regex.singular.bus],
  [regex.singular.buffalo],
  [regex.singular.tium],
  [regex.singular.sis],
  [regex.singular.ffe],
  [regex.singular.hive],
  [regex.singular.aeiouyy],
  [regex.singular.x],
  [regex.singular.matrix],
  [regex.singular.mouse],
  [regex.singular.foot],
  [regex.singular.tooth],
  [regex.singular.goose],
  [regex.singular.quiz],
  [regex.singular.whereas],
  [regex.singular.criterion],
  [regex.singular.genus],

  // original rule
  [regex.plural.men, '$1an'],
  [regex.plural.people, '$1rson'],
  [regex.plural.children, '$1'],
  [regex.plural.databases, '$1'],
  [regex.plural.drives, '$1'],
  [regex.plural.genera, 'genus'],
  [regex.plural.criteria, '$1on'],
  [regex.plural.tia, '$1um'],
  [regex.plural.analyses, '$1$2sis'],
  [regex.plural.hives, '$1ve'],
  [regex.plural.curves, '$1'],
  [regex.plural.lrves, '$1f'],
  [regex.plural.aves, '$1ve'],
  [regex.plural.foves, '$1fe'],
  [regex.plural.movies, '$1ovie'],
  [regex.plural.aeiouyies, '$1y'],
  [regex.plural.series, '$1eries'],
  [regex.plural.xes, '$1'],
  [regex.plural.mice, '$1ouse'],
  [regex.plural.buses, '$1'],
  [regex.plural.oes, '$1'],
  [regex.plural.shoes, '$1'],
  [regex.plural.crises, '$1is'],
  [regex.plural.octopuses, '$1us'],
  [regex.plural.aliases, '$1'],
  [regex.plural.summonses, '$1'],
  [regex.plural.oxen, '$1'],
  [regex.plural.matrices, '$1ix'],
  [regex.plural.vertices, '$1ex'],
  [regex.plural.feet, 'foot'],
  [regex.plural.teeth, 'tooth'],
  [regex.plural.geese, 'goose'],
  [regex.plural.quizzes, '$1'],
  [regex.plural.whereases, '$1'],

  [regex.plural.ss, 'ss'],
  [regex.plural.s, ''],
];

/**
 * @description This is a list of words that should not be capitalized for title case.
 */
const nonTitlecasedWords = [
  'and',
  'or',
  'nor',
  'a',
  'an',
  'the',
  'so',
  'but',
  'to',
  'of',
  'at',
  'by',
  'from',
  'into',
  'on',
  'onto',
  'off',
  'out',
  'in',
  'over',
  'with',
  'for',
];

/**
 * @description These are regular expressions used for converting between String formats.
 */
const idSuffix = new RegExp('(_ids|_id)$', 'g');
const underbar = new RegExp('_', 'g');
const spaceOrUnderbar = new RegExp('[ _]', 'g');
const uppercase = new RegExp('([A-Z])', 'g');
const underbarPrefix = new RegExp('^_');

/**
 * A helper method that applies rules based replacement to a String.
 * @param str String to modify and return based on the passed rules.
 * @param rules Regexp to match paired with String to use for replacement
 * @param skip Strings to skip if they match
 * @param override String to return as though this method succeeded (used to conform to APIs)
 * @returns Return passed String modified by passed rules.
 * @example
 *
 *     applyRules( 'cows', singular_rules ); // === 'cow'
 */
function applyRules(
  str: string,
  rules: [RegExp, string?][],
  skip: string[],
  override?: string
) {
  if (override) {
    return override;
  } else {
    if (skip.includes(str.toLocaleLowerCase())) {
      return str;
    }

    for (const rule of rules) {
      if (str.match(rule[0])) {
        if (rule[1] !== undefined) {
          return str.replace(rule[0], rule[1]);
        }

        return str;
      }
    }
  }

  return str;
}

/**
 * This function adds pluralization support to every String object.
 * @param str The subject string.
 * @param plural Overrides normal output with said String.(optional)
 * @returns Singular English language nouns are returned in plural form.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.pluralize( 'person' ); // === 'people'
 *     inflection.pluralize( 'octopus' ); // === 'octopuses'
 *     inflection.pluralize( 'Hat' ); // === 'Hats'
 *     inflection.pluralize( 'person', 'guys' ); // === 'guys'
 */
export function pluralize(str: string, plural?: string) {
  return applyRules(str, pluralRules, uncountableWords, plural);
}

/**
 * This function adds singularization support to every String object.
 * @param str The subject string.
 * @param singular Overrides normal output with said String.(optional)
 * @returns Plural English language nouns are returned in singular form.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.singularize( 'people' ); // === 'person'
 *     inflection.singularize( 'octopuses' ); // === 'octopus'
 *     inflection.singularize( 'Hats' ); // === 'Hat'
 *     inflection.singularize( 'guys', 'person' ); // === 'person'
 */
export function singularize(str: string, singular?: string) {
  return applyRules(str, singularRules, uncountableWords, singular);
}

/**
 * This function will pluralize or singularlize a String appropriately based on a number value
 * @param str The subject string.
 * @param count The number to base pluralization off of.
 * @param singular Overrides normal output with said String.(optional)
 * @param plural Overrides normal output with said String.(optional)
 * @returns English language nouns are returned in the plural or singular form based on the count.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.inflect( 'people' 1 ); // === 'person'
 *     inflection.inflect( 'octopuses' 1 ); // === 'octopus'
 *     inflection.inflect( 'Hats' 1 ); // === 'Hat'
 *     inflection.inflect( 'guys', 1 , 'person' ); // === 'person'
 *     inflection.inflect( 'inches', 1.5 ); // === 'inches'
 *     inflection.inflect( 'person', 2 ); // === 'people'
 *     inflection.inflect( 'octopus', 2 ); // === 'octopuses'
 *     inflection.inflect( 'Hat', 2 ); // === 'Hats'
 *     inflection.inflect( 'person', 2, null, 'guys' ); // === 'guys'
 */
export function inflect(
  str: string,
  count: number,
  singular?: string,
  plural?: string
) {
  if (isNaN(count)) return str;

  if (count === 1) {
    return applyRules(str, singularRules, uncountableWords, singular);
  } else {
    return applyRules(str, pluralRules, uncountableWords, plural);
  }
}

/**
 * This function adds camelization support to every String object.
 * @param str The subject string.
 * @param lowFirstLetter Default is to capitalize the first letter of the results.(optional)
 *                                 Passing true will lowercase it.
 * @returns Lower case underscored words will be returned in camel case.
 *                  additionally '/' is translated to '::'
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.camelize( 'message_properties' ); // === 'MessageProperties'
 *     inflection.camelize( 'message_properties', true ); // === 'messageProperties'
 */
export function camelize(str: string, lowFirstLetter?: boolean) {
  const strPath = str.split('/');
  const j = strPath.length;
  let strArr: string[], k: number, l: number, first: string;

  for (let i = 0; i < j; i++) {
    strArr = strPath[i].split('_');
    k = 0;
    l = strArr.length;

    for (; k < l; k++) {
      if (k !== 0) {
        strArr[k] = strArr[k].toLowerCase();
      }

      first = strArr[k].charAt(0);
      first =
        lowFirstLetter && i === 0 && k === 0
          ? first.toLowerCase()
          : first.toUpperCase();
      strArr[k] = first + strArr[k].substring(1);
    }

    strPath[i] = strArr.join('');
  }

  return strPath.join('::');
}

/**
 * This function adds underscore support to every String object.
 * @param str The subject string.
 * @param allUpperCase Default is to lowercase and add underscore prefix.(optional)
 *                  Passing true will return as entered.
 * @returns Camel cased words are returned as lower cased and underscored.
 *                  additionally '::' is translated to '/'.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.underscore( 'MessageProperties' ); // === 'message_properties'
 *     inflection.underscore( 'messageProperties' ); // === 'message_properties'
 *     inflection.underscore( 'MP', true ); // === 'MP'
 */
export function underscore(str: string, allUpperCase?: boolean) {
  if (allUpperCase && str === str.toUpperCase()) return str;

  const strPath = str.split('::');
  const j = strPath.length;

  for (let i = 0; i < j; i++) {
    strPath[i] = strPath[i].replace(uppercase, '_$1');
    strPath[i] = strPath[i].replace(underbarPrefix, '');
  }

  return strPath.join('/').toLowerCase();
}

/**
 * This function adds humanize support to every String object.
 * @param str The subject string.
 * @param lowFirstLetter Default is to capitalize the first letter of the results.(optional)
 *                                 Passing true will lowercase it.
 * @returns Lower case underscored words will be returned in humanized form.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.humanize( 'message_properties' ); // === 'Message properties'
 *     inflection.humanize( 'message_properties', true ); // === 'message properties'
 */
export function humanize(str: string, lowFirstLetter?: boolean) {
  str = str.toLowerCase();
  str = str.replace(idSuffix, '');
  str = str.replace(underbar, ' ');

  if (!lowFirstLetter) {
    str = capitalize(str);
  }

  return str;
}

/**
 * This function adds capitalization support to every String object.
 * @param str The subject string.
 * @returns All characters will be lower case and the first will be upper.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.capitalize( 'message_properties' ); // === 'Message_properties'
 *     inflection.capitalize( 'message properties', true ); // === 'Message properties'
 */
export function capitalize(str: string) {
  str = str.toLowerCase();

  return str.substring(0, 1).toUpperCase() + str.substring(1);
}

/**
 * This function replaces underscores with dashes in the string.
 * @param str The subject string.
 * @returns Replaces all spaces or underscores with dashes.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.dasherize( 'message_properties' ); // === 'message-properties'
 *     inflection.dasherize( 'Message Properties' ); // === 'Message-Properties'
 */
export function dasherize(str: string) {
  return str.replace(spaceOrUnderbar, '-');
}

/**
 * This function adds titleize support to every String object.
 * @param str The subject string.
 * @returns Capitalizes words as you would for a book title.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.titleize( 'message_properties' ); // === 'Message Properties'
 *     inflection.titleize( 'message properties to keep' ); // === 'Message Properties to Keep'
 */
export function titleize(str: string) {
  str = str.toLowerCase().replace(underbar, ' ');
  const strArr = str.split(' ');
  const j = strArr.length;
  let d: string[], l: number;

  for (let i = 0; i < j; i++) {
    d = strArr[i].split('-');
    l = d.length;

    for (let k = 0; k < l; k++) {
      if (nonTitlecasedWords.indexOf(d[k].toLowerCase()) < 0) {
        d[k] = capitalize(d[k]);
      }
    }

    strArr[i] = d.join('-');
  }

  str = strArr.join(' ');
  str = str.substring(0, 1).toUpperCase() + str.substring(1);

  return str;
}

/**
 * This function adds demodulize support to every String object.
 * @param str The subject string.
 * @returns Removes module names leaving only class names.(Ruby style)
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.demodulize( 'Message::Bus::Properties' ); // === 'Properties'
 */
export function demodulize(str: string) {
  const strArr = str.split('::');

  return strArr[strArr.length - 1];
}

/**
 * This function adds tableize support to every String object.
 * @param str The subject string.
 * @returns Return camel cased words into their underscored plural form.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.tableize( 'MessageBusProperty' ); // === 'message_bus_properties'
 */
export function tableize(str: string) {
  str = underscore(str);
  str = pluralize(str);

  return str;
}

/**
 * This function adds classification support to every String object.
 * @param str The subject string.
 * @returns Underscored plural nouns become the camel cased singular form.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.classify( 'message_bus_properties' ); // === 'MessageBusProperty'
 */
export function classify(str: string) {
  str = camelize(str);
  str = singularize(str);

  return str;
}

/**
   * This function adds foreign key support to every String object.
   * @param str The subject string.
   * @param dropIdUbar Default is to seperate id with an underbar at the end of the class name,
                                 you can pass true to skip it.(optional)
   * @returns Underscored plural nouns become the camel cased singular form.
   * @example
   *
   *     const inflection = require( 'inflection' );
   *
   *     inflection.foreign_key( 'MessageBusProperty' ); // === 'message_bus_property_id'
   *     inflection.foreign_key( 'MessageBusProperty', true ); // === 'message_bus_propertyid'
   */
export function foreignKey(str: string, dropIdUbar?: boolean) {
  str = demodulize(str);
  str = underscore(str) + (dropIdUbar ? '' : '_') + 'id';

  return str;
}

/**
 * This function adds ordinalize support to every String object.
 * @param str The subject string.
 * @returns Return all found numbers their sequence like '22nd'.
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.ordinalize( 'the 1 pitch' ); // === 'the 1st pitch'
 */
export function ordinalize(str: string) {
  const strArr = str.split(' ');
  const j = strArr.length;

  for (let i = 0; i < j; i++) {
    const k = parseInt(strArr[i], 10);

    if (!isNaN(k)) {
      const ltd = strArr[i].substring(strArr[i].length - 2);
      const ld = strArr[i].substring(strArr[i].length - 1);
      let suf = 'th';

      if (ltd != '11' && ltd != '12' && ltd != '13') {
        if (ld === '1') {
          suf = 'st';
        } else if (ld === '2') {
          suf = 'nd';
        } else if (ld === '3') {
          suf = 'rd';
        }
      }

      strArr[i] += suf;
    }
  }

  return strArr.join(' ');
}

const transformFunctions = {
  pluralize,
  singularize,
  camelize,
  underscore,
  humanize,
  capitalize,
  dasherize,
  titleize,
  demodulize,
  tableize,
  classify,
  foreignKey,
  ordinalize,
} as const;

/**
 * This function performs multiple inflection methods on a string
 * @param str The subject string.
 * @param arr An array of inflection methods.
 * @returns
 * @example
 *
 *     const inflection = require( 'inflection' );
 *
 *     inflection.transform( 'all job', [ 'pluralize', 'capitalize', 'dasherize' ]); // === 'All-jobs'
 */
export function transform(
  str: string,
  arr: (keyof typeof transformFunctions)[]
) {
  const j = arr.length;

  for (let i = 0; i < j; i++) {
    const method = arr[i];
    const methodFn = transformFunctions[method];

    if (methodFn) {
      str = methodFn(str);
    }
  }

  return str;
}